Formation of molybdene coatings on steel in conditions of self propagating high temperature synthesis

Abstract

A promising way to obtain coatings with adjustable composition, structure and performance characteristics with limited or minimal time of their formation is the strengthening of steels with molybdenum coatings obtained in the conditions of self-propagating high-temperature synthesis (SHS). For the deposition of coatings, we used steels of mass purpose (st.20, st.45, U8). The treatment was carried out in open-type reactors in the thermal autoignition mode. Working temperature range 1000 ÷ 1300 ºС, duration of isothermal holding - 120 min. Powders of oxides of chromium and aluminum, titanium, chromium, aluminum, technical purity, metallic iodine with a dispersion of 200-350 microns were used as reaction agents.